refactor: use ternary operators in Helpers

system/Helpers/array_helper.php

@@ -72,12 +72,8 @@ function _array_search_dot(array $indexes, array $array)
             $answer = array_filter($answer, static fn ($value) => $value !== null);
 
             if ($answer !== []) {
-                if (count($answer) === 1) {
-                    // If array only has one element, we return that element for BC.
-                    return current($answer);
-                }
-
-                return $answer;
+                // If array only has one element, we return that element for BC.
+                return count($answer) === 1 ? current($answer) : $answer;
             }
 
             return null;

system/Helpers/form_helper.php

@@ -656,13 +656,7 @@ function set_radio(string $field, string $value = '', bool $default = false): st
 
         $postInput = $request->getPost($field);
 
-        if ($oldInput !== null) {
-            $input = $oldInput;
-        } elseif ($postInput !== null) {
-            $input = $postInput;
-        } else {
-            $input = $default;
-        }
+        $input = $oldInput ?? $postInput ?? $default;
 
         if (is_array($input)) {
             // Note: in_array('', array(0)) returns TRUE, do not use it

system/Helpers/html_helper.php

@@ -70,9 +70,9 @@ function _list(string $type = 'ul', $list = [], $attributes = '', int $depth = 0
                 $out .= $val;
             } else {
                 $out .= $key
-                        . "\n"
-                        . _list($type, $val, '', $depth + 4)
-                        . str_repeat(' ', $depth + 2);
+                    . "\n"
+                    . _list($type, $val, '', $depth + 4)
+                    . str_repeat(' ', $depth + 2);
             }
 
             $out .= "</li>\n";